Marley Sustainable Drainage Rainwater Harvesting Kits ... - BHL.co.uk

RAINWATER HARVESTING KITS - INSTALLATION MANUAL
Riser assembly
a) Fit a full length riser section over the neck of the bottom
housing, making sure that the plain end of the riser is
uppermost as shown in figure 8. Note: the shortest of the four
riser sections is the last to be fitted to the well.
b) Drill four holes around the base of the riser into the bottom
housing with a 3.5mm drill and secure with the No 8 x 20mm
screws provided in the fixing kit.
c) Position the assembled unit into the centre well of the
Waterloc cells so that there is an equal gap either side of the
bottom housing. Note: the bottom housing is handed – the
110mm recess for the vertical supply pipe must be positioned
so that it is on the opposite side to the incoming pipes on the
inlet chamber.
d) Insert the supply pipe into the recess in the housing.
e) Place a sealing ring in the first groove of a riser section and
push fit it onto the first riser (figure 8).
f) Fit four connectors around the corners of the centre well to
provide a location key for the top layer of soakaway cells, (See
figure 7) Note: No further connectors should be fitted between
the tank and soakaway cells.
g) The tank construction can now be completed by adding the
top cover.
Figure 7
Soakaway construction
a) Lay the remaining Waterloc cells over the tank using the four
connectors around the centre well as a location guide.
b) Fit single connectors to all intersecting corners on the top face.
c) When installing more than eight cells to construct the
soakaway, make sure that the base of the extended excavation
is compacted and accurately levelled to the top of the tank.
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